2BFL4-BT40Helmet earphone

ShenzhenJiayoudaElectronicsCo.,Ltd Address：711,BuildingC,LangkouBaokeIndustrialZone,LonghuaDistrict,Shenzhen,Guangdong, China Date:2024-04-07 FederalCommunicationsCommission AuthorizationandEvaluationDivision 1435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsPart2.911(d)(7)Filing SUBJECT:FCCApplicationforFCCID:2BFL4-BT40 FRN:0035190701 (“ShenzhenJiayoudaElectronicsCo.,Ltd”)certifiesthat,asofthedateofthefilingofthe application,GSSSERVICEINCisourdesignatedU.S.agentforserviceofprocessforthe abovereferencedFCCID.(“ShenzhenJiayoudaElectronicsCo.,Ltd”)acceptstomaintainan agentfornolessthanoneyearafterthegranteehasterminatedallmarketingandimportation ortheconclusionofanyCommission-relatedproceedinginvolvingtheequipment. GSSSERVICEINCaccepts,asofthedateofthefilingoftheapplication,theobligationofthe designatedU.S.agentforserviceofprocessfortheabovereferencedFCCID. DesignatedU.S.AgentInformation: Name:GSSSERVICEINC Address:6547NAcademyBlvd#2266ColoradoSpringsCOLORADO80918UnitedStates FRN：0033402082 ContactPerson:MichouxLogan Tel.:001-949-2990192 Email:[email protected] Sincerely, Signedonbehalfof（ShenzhenJiayouda ElectronicsCo.,Ltd） SignedonbehalfofGSSSERVICEINC Name:JinpingHeName:MichouxLogan Title:ManagerTitle:Manager Date:2024-04-07Date:2024-04-07

(ShenzhenJiayoudaElectronicsCo.,Ltd) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:Apr.07,2024 FCCID:2BFL4-BT40 Ref.#1:AttestationStatementsPart2.911(d)(5)(i)Filing (“ShenzhenJiayoudaElectronicsCo.,Ltd”)certifiesthattheequipmentforwhich authorizationissoughtisnot“covered”equipmentprohibitedfromreceivinganequipment authorizationpursuanttosection2.903oftheFCCrules. Ref.#2:AttestationStatementsPart2.911(d)(5)(ii)Filing (“ShenzhenJiayoudaElectronicsCo.,Ltd”)certifiesthat,asofthedateofthefilingof theapplication,theapplicantisnotidentifiedontheCoveredListasanentity producing“covered”equipment. Applicant:ShenzhenJiayoudaElectronicsCo.,Ltd Address:711,BuildingC,LangkouBaokeIndustrialZone,LonghuaDistrict,Shenzhen, Guangdong,China ContactPerson:JinpingHe Tel.:+8615297841020 Email:[email protected] Sincerely, Signature:

2.4GHz3216ChipAntenna:RANT3216F245C03 _ Application: WLAN,802.11b/g,Bluetooth,WLAN,etc... Features SMD,highreliability,ultraImpact,Omni-directional... PartnumberInformation RANT3216F245C03 (A)(B)(C)(D)(E)(F) ElectricalSpecification ThespecificationisdefinedonEVB. DimensionandTerminalConfiguration No.TerminalName 1Feeding/GNG 2GND/Feeding (A)ProductTypeChipAntenna (B)SizeCode 3.2x1.6mm( ± 0.2mm) (C)MaterialHighKmaterial (D)Frequency2.4~2.5GHz (E)FeedingmodePIFA&SingleFeeding (F)AntennatypeType=03 WorkingFrequencyRange2400~2500MHz Bandwidth120MHz(Min.) PeakGain2.25dBi(Typ.) Impedance50Ohm Returnloss10dB(Min) PolarizationLinear AzimuthBeamwidthOmni-directional OperationTemperature(°C)-40~85°C ResistancetoSolderingHeats 10sec.(@280°C) TerminationNi/Au(Leadless) Dimension(mm) L 3.20±0.20 W 1.60±0.20 T 0.45±0.20 RAINInternationalTechnol o gyCo.,Ltd.TEL:13530576606 2.4GHz3216ChipAntenna:RANT3216F245C03 _ 1 EvaluationBoardReference Dimension AntennaLayoutReference Unit:mm ElectricalCharacteristics ReturnLoss&Radiation ReturnLoss Frequency(MHz) S11(dB) 2400-10.50 2450-30.62 2500-11.47 2.4GHz3216ChipAntenna:RANT3216F245C03 _ Radiation 2400MHz2450MHz2500MHz Efficiency82.52%85.26%83.01% PeakGain2.15dBi2.25dBi2.19dBi Directivity1.89dBi1.97dBi1.91dBi X Y Z 2400MHz 2450MHz 2500MHz 2.4GHz3216ChipAntenna:RANT3216F245C03 _ TapingSpecifications ReelandTapingSpecification ReelSpecification TYPESIZEABCD 32167”5K/Reel 9.0±0.5 60±213.5±0.5178±2 TappingSpecification PackagingTypeABWEFGHTψDP PaperType3216 1.90±0.2 0 3.50±0.2 0 8.0±0.2 0 1.75±0.1 0 3.5±0.054.0±0.102.0±0.050.75±0.1 0 1.50±0.1 0 4.0±0.1 2.4GHz3216ChipAntenna:RANT3216F245C03 _ ReliabilityTable TestItemProcedure Requirements CeramicType Remark (Reference) Electrical Characterization Fulfilltheelectrical specification UserSpec. Thermal Shock 1.Preconditioning: 50±10°C/1hr,thenkeepfor24±1hrsatroomtemp. 2.Initialmeasure:Spec:referInitialspec. 3.Rapidchangeoftemperaturetest: -30°Cto+85°C;100cycles; 15minutesatLowercategorytemperature; 15minutesatUppercategorytemperature. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 107 Temperature Cycling 1.Initialmeasure:Spec:referInitialspec. 2.100Cycles(-30°Cto+85°C),SoakMode=1(2Cycle/hours). 3.Measurementat24±2Hoursaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. JESD22 JA104 HighTemperature Exposure 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered;500hours@T=+85°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 LowTemperature Storage 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered:500hours@T=-30°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 Solderability (SMDBottomSide) Dippingmethod: a.Temperature:235±5°C b.Dippingtime:3±0.5s Thesoldershouldcover over95%ofthecritical areaofbottomside. IEC60384-21/22 4.10 SolderingHeat Resistance (RSH) Preheatingtemperature:150±10°C. Preheatingtime:1~2min. Soldertemperature:260±5°C. Dippingtime:5±0.5s NoVisibleDamage.IEC60384-21/22 4.10 Vibration5g'sfor20min.,12cycleseachof3orientations Note:Use8"X5"PCB.031"thick7securepointson,onelong sideand2securepointsatcornersofoppositesides.Parts mountedwithin2"fromanysecurepoint.Testfrom10-2000 Hz. NoVisibleDamage.MIL-STD-202 Method204 Mechanical Shock Threeshocksineachdirectionshallbeappliedalongthethree mutuallyperpendicularaxesofthetestspecimen(18shocks) Peakvalue:1,500g’s Duration:0.5ms Velocitychange:15.4ft/s Waveform:Half-sine NoVisibleDamage.MIL-STD-202 Method213 Humidity Bias 1.Humidity:85%R.H.,Temperature:85±2°C. 2.Time:500±24hours. 3.Measurementat24±2hrsaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 Method106 2.4GHz3216ChipAntenna:RANT3216F245C01 _ Board Flex (SMD) 1.Mountingmethod: IR-Reflow.PCBSize(L:100×W:40×T:1.6mm) 2.Applytheloadindirectionofthearrowuntilbendingreaches 2mm. NoVisibleDamage.AEC-Q200 005 AdhesionForceof1.8Kgfor60seconds. NoVisibleDamage Magnificationof20Xor greatermaybeemployed forinspectionofthe mechanicalintegrityofthe devicebodyterminalsand body/terminaljunction. AEC-Q200 006 Physical Dimension Anyapplicablemethodusingx10magnification,micrometers, calipers,gauges,contourprojectors,orothermeasuring equipment,capableofdeterminingtheactualspecimen dimensions. Inaccordancewith specification. JESD22 JB100 RevisionHistory RevisionDateContent 12019/03/01NewDatasheet 22020/02/22Add2Dradiationcharacteristic

ShenzhenJiayoudaElectronicsCo.,Ltd Date：2024-04-07 ProductModelNumber:BT40,BT-36,BT-22B,BT-10B,BT-16 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatORGANIZATION.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyORGANIZATION.onourbehalf shallhavethesameeffectasactsofourown. By: ContactListedonFCCWesbite Title:Manager Email:[email protected] Telephone:+8615297841020 Onbehalfof:ShenzhenJiayoudaElectronicsCo.,Ltd

ShenzhenJiayoudaElectronicsCo.,Ltd OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:April7,2024 Subject;RequestforConfidentiality FCCID:2BFL4-BT40 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthese documentsmightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantage inthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure SoftwareSecurityRequirementsforUNIIdevices Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:JinpingHe Title:Manager

ShenzhenJiayoudaElectronicsCo.,Ltd ModelDifference Productdescription:Helmetearphone Modelname:BT40,BT-36,BT-22B,BT-10B,BT-16 FCCID:2BFL4-BT40 BT40istestedmodel,othermodelsarederivativemodels.Themodelsareidentical incircuit,onlydifferentonthemodelnames,colourandshape.Sothetestdataof BT40canrepresenttheremainingmodels. Client’ssignature: Client’sname/title:JinpingHe/Manager Contactinformation/address:711,BuildingC,LangkouBaokeIndustrialZone, LonghuaDistrict,Shenzhen,Guangdong,China

FCCID:2BFL4-BT40 Page 1 of 4 EUTPHOTOSExternalPhotos FCCID:2BFL4-BT40 Page 2 of 4 FCCID:2BFL4-BT40 Page 3 of 4 FCCID:2BFL4-BT40 Page 4 of 4 ※※※※※ENDOFREPORT※※※※※

Size:3mm*6mm FCCID:2BFL4-BT40

FCCID:2BFL4-BT40 Page 1 of 6 EUTPHOTOSInternalPhotos FCCID:2BFL4-BT40 Page 2 of 6 FCCID:2BFL4-BT40 Page 3 of 6 ANT FCCID:2BFL4-BT40 Page 4 of 6 FCCID:2BFL4-BT40 Page 5 of 6 FCCID:2BFL4-BT40 Page 6 of 6 ※※※※※ENDOFREPORT※※※※※

FCCID:2BFL4-BT40 RFExposureEvaluation AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1093，Unless specificallyrequiredbythepublishedRFexposureKDBprocedures,standalone1-gheador bodyand10-gextremitySARevaluationforgeneralpopulationexposureconditions,by measurementornumericalsimulation,isnotrequiredwhenthecorrespondingSARTest ExclusionThresholdcondition(s),listedbelow,is(are)satisfied. For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-gSARtest exclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f (GHz) ]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f (GHz) istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Here, ForBluetooth Mode Max Power (dBm) Tune-up power (dBm) Max Power (mW) Frequency(MHz) Min. Distance (mm) Calc. thresholds limit BT7.527±1 6.31 2441 51.9723.0 SoaSARtestisnotrequired

Project No.: ZHT-240325018E Page 1 of 75 FCC TEST REPORT FCC ID:2BFL4-BT40 Report Number. .................................. : ZHT-240325018E Date of Test .......................................... : Mar. 25, 2024 to Apr. 02, 2024 Date of issue ......................................... : Apr. 02, 2024 Test Result .......................................... : PASS Testing Laboratory. .......................... : Guangdong Zhonghan Testing Technology Co., Ltd. Address ............................................... : Room 104, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Applicant's name ............................. : Shenzhen Jiayouda Electronics Co.,Ltd Address ............................................... : 711, Building C,Langkou Baoke Industrial Zone, Longhua District, Shenzhen City, Guangdong Province Manufacturer's name ...................... : Shenzhen Jiayouda Electronics Co.,Ltd Address ............................................... : 711, Building C,Langkou Baoke Industrial Zone, Longhua District, Shenzhen City, Guangdong Province Test specification .............................. : Standard ................................................ : FCC CFR Title 47 Part 15 Subpart C Section 15.247 Test procedure ..................................... : KDB558074 D01 15.247 Meas Guidance v05r02 ANSI C63.10:2013 Non-standard test method ................ :N/A This device described above has been tested by ZHT, and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicableonly to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of ZHT, this document may be altered or revised by ZHT, personal only, and shall be noted in the revision of the document. Product name ..................................... :Helmet earphone Trademark ........................................... :/ Model/Type reference ......................... :BT40 BT-36, BT-22B, BT-10B, BT-16 Model difference .................................. : BT40 is tested model, other models are derivative models .The models are identical in circuit, only different on the model names, colour and shape. So the test data of BT40 can represent the remaining models. Ratings..................................................: Input: DC 5V, 800mAh Project No.: ZHT-240325018E Page 2 of 75 Testing procedure and testing location: Testing Laboratory .......................................... : Guangdong Zhonghan Testing Technology Co., Ltd. Address ............................................................ : Room 104, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Kevin Yang Tested by (name + signature) ....................... : Baret Wu Reviewer (name + signature) ....................... : Levi Lee Approved (name + signature) ....................... : Project No.: ZHT-240325018E Page 3 of 75 Table of Contents Page 2.1 TEST FACILITY.............................................................................................................................7 2.2 MEASUREMENT UNCERTAINTY................................................................................................ 7 3. GENERAL INFORMATION.............................................................................................................8 3.1 GENERAL DESCRIPTION OF EUT..............................................................................................8 3.3 Support Equipment......................................................................................................................10 3.4 Test Mode....................................................................................................................................10 3.5 EQUIPMENTS LIST FOR ALL TEST ITEMS...............................................................................11 4. EMC EMISSION TEST..................................................................................................................13 4.1 Conducted emissions.................................................................................................................. 13 4.1.1 POWER LINE CONDUCTED EMISSION Limits.......................................................................13 4.1.2 TEST PROCEDURE.................................................................................................................13 4.1.3 DEVIATION FROM TEST STANDARD....................................................................................13 4.1.4 TEST SETUP............................................................................................................................14 4.1.5 EUT OPERATING CONDITIONS.............................................................................................14 4.1.6 TEST RESULTS.......................................................................................................................14 4.2 Radiated emissions..................................................................................................................... 17 4.2.1 Radiated Emission Limits......................................................................................................... 17 4.2.2 TEST PROCEDURE.................................................................................................................17 4.2.3 DEVIATION FROM TEST STANDARD....................................................................................18 4.2.4 TEST SETUP............................................................................................................................18 4.2.5 EUT OPERATING CONDITIONS.............................................................................................19 4.2.6 TEST RESULTS..............................................................................................…

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FCCID:2BFL4-BT40 Page 1 of 2 EUTTESTPHOTOS FCCID:2BFL4-BT40 Page 2 of 2 ※※※※※ENDOFREPORT※※※※※